EP 1248317 A1 20021009 - Electrically tunable multiband planar antenna
Title (en)
Electrically tunable multiband planar antenna
Title (de)
Elektrisch abstimmbare Mehrband-Planarantenne
Title (fr)
Antenne planaire multibandes accordable électriquement
Publication
Application
Priority
FI 20010682 A 20010402
Abstract (en)
The mobile telecommunication device has a radio transceiver having an antenna port and a control block. A ground plane constitutes a local ground potential for the radio transceiver. A planar radiating element located parallel to the ground plane and coupled to the antenna port of the radio transceiver. A number of grounding connections between the planar radiating element and the ground plane, each grounding connection is independently controllable by the control block of the radio transceiver between certain states. The state of each independently controllable grounding connection has an effect on certain operational frequency bands of the mobile telecommunications device. The control block of the radio transceiver is arranged to detect changes where the mobile telecommunications device moves from a first cellular radio system to a second cellular radio system, of which operation in the first cellular radio system involves a certain first radio frequency range and operation in the cellular radio system involves a certain second radio frequency range that is different than the first radio frequency range. The control block of the radio transceiver is arranged to alter the settings of the independently controllable grounding connections in response to detected changes.
IPC 1-7
IPC 8 full level
H01Q 1/24 (2006.01); H01Q 5/00 (2006.01); H01Q 5/364 (2015.01); H01Q 9/04 (2006.01)
CPC (source: EP US)
H01Q 1/243 (2013.01 - EP US); H01Q 5/364 (2015.01 - EP US); H01Q 9/0421 (2013.01 - EP US); H01Q 9/0442 (2013.01 - EP US); H01Q 9/14 (2013.01 - EP US)
Citation (search report)
- [XY] EP 1052722 A2 20001115 - NOKIA MOBILE PHONES LTD [FI]
- [Y] DE 10015583 A1 20001123 - NGK INSULATORS LTD [JP]
- [A] WO 9930479 A1 19990617 - ERICSSON GE MOBILE INC [US]
- [DA] EP 0993070 A1 20000412 - NEC CORP [JP]
- [A] WO 0120718 A1 20010322 - AVANTEGO AB [SE], et al
- [YA] ROSTBAKKEN O ET AL: "An adaptive microstrip patch antenna for use in portable transceivers", VEHICULAR TECHNOLOGY CONFERENCE, 1996. MOBILE TECHNOLOGY FOR THE HUMAN RACE., IEEE 46TH ATLANTA, GA, USA 28 APRIL-1 MAY 1996, NEW YORK, NY, USA,IEEE, US, 28 April 1996 (1996-04-28), pages 339 - 343, XP010162405, ISBN: 0-7803-3157-5
Designated contracting state (EPC)
AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR
DOCDB simple family (publication)
EP 1248317 A1 20021009; FI 113813 B 20040615; FI 20010682 A0 20010402; FI 20010682 A 20021003; US 2002180650 A1 20021205; US 6693594 B2 20040217
DOCDB simple family (application)
EP 02396038 A 20020326; FI 20010682 A 20010402; US 11459102 A 20020401